{"AnnAssignHandle": "AnnAssign 语句处理器：继承 Mixin 获得 Trans 回指针", "AnnAssignHandle.PreScan": "预扫描 AnnAssign，提前创建 alloca 到 entry block 顶部", "AnnAssignHandle.Handle": "翻译 AnnAssign(target=Name, annotation=..., value=expr)"}